Home / 85,583.58-128,320.68-41,121.87

Finding the Fourth Proportional to 85,583.58, 128,320.68 and 41,121.87

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Solution

The fourth proportional to 85,583.58, 128,320.68 and 41,121.87 is: 61,656.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,583.58 : 128,320.68 = 41,121.87 : x
  2. Step 2: Convert to fraction form
    85,583.58/128,320.68 = 41,121.87/x
  3. Step 3: Cross multiply
    85,583.58x = 128,320.68 × 41,121.87
  4. Step 4: Simplify right side
    85,583.58x = 5,276,786,321.27
  5. Step 5: Solve for x
    x = 5,276,786,321.27/85,583.58
  6. Step 6: Final answer
    x = 61,656.53

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.